Im guessing i mean EF, not EF/S.. To be honest, i dont know the difference. All i know is there is the EF 100mm f2.8 for $900 in a local shop, or there is the f2.8L online for around $850-900 too. Is there much different between the non L and the L??
The regular EF 100mm f/2.8 Macro is around the $500 USD range, but the EF 100mm F/2.8L IS Macro runs in the neighborhood of $900 USD. Both are great lenses, but the IS on the L is superb. Hand-held macro shots at 1/25 of a second is possible. Something I could never do with my EF-S 60 f/2.8 Macro. I find that the 60mm is sharper than the regular 100mm macro, but the L trumps them all. Usually I never have my tripod handy when I need it, so the IS is a bonus. FYI, EF-S lenses will only fit on APS-C "crop" sensor cameras; i.e. EOS Rebel line, 7D thru 60D line of camera bodies.